Persistence of Vision is not only a raytracer…


Yesterday I wrote about the bike mounted POV display. And today? Well. It’s a real huge display:

“Spin uses Persistence of Vision to create the illusion of a cylindrical
digital display (computer screen), 12 feet tall and 12 feet in diameter. Vertical
columns of multi-color LED (light emitting diode) clusters spin around a vertical
axis at 90 revolutions per minute. At a radius of 6 feet, they move at 41 miles
per hour. 2880 LEDs are turned on and off by a computer in precise synchronization
with the rotation of the columns, creating the illusion of a cylindrical digital
display. Spin has a vertical resolution of 16 pixels (picture elements), each
of which can display one of 8 colors. As horizontal position is determined by
time in Spin, the horizontal resolution is theoretically infinite, but for the
sake of data manipulation efficiency it is be limited to 360 pixels all the
way around the cylinder.”

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